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                                                                July 1, 2001

 FUND PROFILE
T. ROWE PRICE
U.S. Bond Index Fund

 A bond fund that seeks to match the performance of a broad U.S.
 investment-grade bond index.
This profile summarizes key information about the fund that is included in the
fund's prospectus. The fund's prospectus includes additional information about
the fund, including a more detailed description of the risks associated with
investing in the fund that you may want to consider before you invest. You may
obtain the prospectus and other information about the fund at no cost by calling
1-800-638-5660, or by visiting our Web site at www.troweprice.com.

TROWEPRICELOGO

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FUND PROFILE
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 What is the fund's objective?

   The fund seeks to match the total return performance of the U.S.
   investment-grade bond market.


 What is the fund's principal investment strategy?

   The fund's managers will use passive investment management techniques in an
   effort to match the total return performance of the U.S. investment-grade
   bond market, as represented by the Lehman Brothers Aggregate Bond Index. The
   Lehman index typically includes more than 5,000 fixed-income securities with
   an overall intermediate to long-range dollar-weighted average maturity. The
   range was 8.4 to 9.0 years for the last five years ending December 31, 1999,
   although it will vary with market conditions. The cost of owning and trading
   such a large number of securities would be prohibitive; therefore, the fund
   intends to use a sampling strategy. Under this approach, we will consider
   each broad segment of the benchmark - government bonds, mortgages, and
   corporate issues - and within each segment select a set of U.S.
   dollar-denominated bonds that is representative of key benchmark traits. The
   most important of these traits are interest rate sensitivity, credit quality,
   and sector diversification, although other characteristics will be reflected.

   The fund's manager will invest substantially all fund assets in bonds
   specifically represented in the index. As a result, we expect to own U.S.
   government and agency obligations, mortgage- and asset-backed securities,
   corporate bonds and U.S. dollar-denominated securities of foreign issuers.
   Other securities may also be purchased, such as collateralized mortgage
   obligations (CMOs) and certain types of derivatives, provided they have
   similar characteristics to index securities but potentially offer more
   attractive prices, yields, or liquidity. Derivatives, such as futures and
   options, will not exceed 10% of the fund's total assets. This flexibility in
   investing is intended to help the manager keep the fund's composition in line
   with the index and minimize deviations in performance between the fund and
   the index.While there is no guarantee, the investment manager expects the
   correlation between the fund and the index to be at least .95. A correlation
   of 1.00 means the returns of the fund and the index move in the same
   direction (but not necessarily by the same amount). A correlation of 0.00
   means movements in the fund are unrelated to movements in the index.

   The fund may sell securities to better align the portfolio with the
   characteristics of its benchmark or to satisfy redemption requests. However,
   the fund is not required to sell specific bond issues that have been removed
   from the index.
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FUND PROFILE
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   Further information about the fund's investments, including a review of
   market conditions and fund strategies and their impact on performance, is
   available in the annual and semiannual shareholder reports. To obtain free
   copies of either of these documents, call 1-800-638-5660.


 What are the main risks of investing in the fund?

   This fund is designed to track the performance of investment-grade bonds,
   regardless of whether they are rising or falling. Because index funds are
   passively managed and fully invested at all times, assets can not be shifted
   from one bond or group of bonds to another based on their prospects in an
   attempt to cushion the impact of a market decline. Therefore, actively
   managed funds may outperform index funds. In addition, index funds carry the
   same overall risks as the indexes they are designed to track. The following
   are the principal risks the fund may face:

  .Interest rate risk Investors should be concerned primarily with this risk
   because the Lehman Brothers Aggregate Bond Index has typically had an
   intermediate to long weighted average maturity. An increase in interest rates
   will likely cause the fund's share price to fall, resulting in a loss of
   principal. That's because the bonds and fixed income securities in the fund's
   portfolio become less attractive to other investors when securities with
   higher yields become available. Even GNMAs and other securities whose
   principal and interest payments are guaranteed by the U.S. government can
   decline in price if rates rise. The longer a bond's maturity, the greater its
   potential for price declines if rates rise and for price gains if rates fall.
   Therefore, this fund carries more interest rate risk than short-term bond
   funds.

  .Credit risk This is the chance that any of a fund's holdings will have its
   credit rating downgraded or will default (fail to make scheduled interest or
   principal payments), potentially reducing the fund's income level and share
   price. While the fund's overall credit quality is investment grade (AAA to
   BBB), BBB securities are more susceptible to adverse economic conditions and
   some may have speculative characteristics.

  .The fund may continue to hold a security that has been downgraded or loses
   its investment-grade rating after purchase.

  .Prepayment risk and extension risk A mortgage-backed bond, unlike most other
   bonds, can be hurt when interest rates fall, because homeowners tend to
   refinance and prepay principal. The loss of high-yielding, underlying
   mortgages and the reinvestment of proceeds at lower interest rates can reduce
   the bond's potential price gain in response to falling interest rates, reduce
   the bond's yield, or even cause the bond's price to fall below what an
   investor paid for it, resulting in a capital loss. Any of these developments
   could cause a decrease in the fund's income, share price, or total return.
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FUND PROFILE
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   Extension risk refers to a rise in interest rates that causes a fund's
   average maturity to lengthen unexpectedly due to a drop in mortgage
   prepayments. This would increase the fund's sensitivity to rising rates and
   its potential for price declines.

  .Derivatives risk This is the potential that our investments in these complex
   and volatile instruments could affect the fund's share price. In addition to
   CMOs and better-known instruments such as futures, other derivatives that may
   be used in limited fashion by the fund include interest-only (IO) and
   principal-only (PO) securities known as "strips." The value of these
   instruments is derived from an underlying pool of mortgage-backed securities
   or a CMO. All these instruments can be highly volatile, and their value can
   fall dramatically in response to rapid or unexpected changes in the mortgage
   or interest rate environment.

   Tracking error Differences between the composition of the fund and its index,
   as well as differences in pricing sources, will likely result in tracking
   error, or the risk that fund performance will not match that of the index.
   Tracking error will also result because the fund incurs fees and transaction
   expenses while indices have none. The timing of cash flows and the fund's
   size can also influence returns.

   As with any mutual fund, there can be no guarantee the fund will achieve its
   objective.

  .The fund's share price may decline, so when you sell your shares, you may
   lose money.


 How can I tell if the fund is appropriate for me?

   Consider your investment goals, your time horizon for achieving them, and
   your tolerance for risk. If you seek a low-cost way to participate in the
   U.S. investment-grade bond market through a fund that tracks a well-known
   benchmark, the fund may be an appropriate investment.

   The fund can be used in both regular and tax-deferred accounts, such as IRAs.

  .The fund should not represent your complete investment program or be used
   for short-term trading purposes.


 How has the fund performed in the past?

   Because the fund commenced operations in 2000, there is no historical
   performance information shown here. Performance history will be presented
   after the fund has been in operation for one calendar year.
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FUND PROFILE
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 What fees or expenses will I pay?

   The fund is 100% no load. However, the fund charges a redemption fee of
   0.50%, payable to the fund, on shares held less than six months. There are no
   other fees or charges to buy or sell fund shares, reinvest dividends, or
   exchange into other T. Rowe Price funds. There are no 12b-1 fees. Redemption
   proceeds of less than $5,000 sent by wire are subject to a $5 fee paid to the
   fund.

   The fund has a single, all-inclusive fee covering investment management and
   ordinary recurring operating expenses (other than fees and expenses for the
   fund's independent directors). This fee will not fluctuate. In contrast, most
   mutual funds have a fixed management fee plus a fee for operating expenses
   that varies according to a number of other factors.


<TABLE>
 Table 1 Fees and Expenses of the Fund
<CAPTION>
Shareholder fees (fees
      paid directly from your                Annual fund operating expenses
            investment)              (expenses that are deducted from fund assets)
                                                                      Total annual
                      Account                                        fund operating
 Redemption fee  maintenance fee/a/  Management fee  Other expenses     expenses
 <C>             <C>                 <C>             <C>             <C>             <S>





     0.50%              $10              0.30%           0.00%           0.30%
 -----------------------------------------------------------------------------------------
</TABLE>


 /a/A $2.50 quarterly fee is charged for accounts with balances less than
   $10,000.


   Example. The following table gives you a rough idea of how expense ratios may
   translate into dollars and helps you to compare the cost of investing in this
   fund with that of other mutual funds. Although your actual costs may be
   higher or lower, the table shows how much you would pay if operating expenses
   remain the same, you invest $10,000, earn a 5% annual return, and hold the
   investment for the following periods and then redeem:
<TABLE>
<CAPTION>
          1 year                    3 years
 ----------------------------------------------------------
 <C>                       <C>                        <S>
           $31                        $97
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</TABLE>



 Who manages the fund?

   The fund is managed by T. Rowe Price Associates, Inc. Founded in 1937, T.
   Rowe Price and its affiliates manage investments for individual and
   institutional accounts. The company offers a comprehensive array of stock,
   bond, and money market funds directly to the investing public.

   Edmund M. Notzon manages the fund day-to-day and has been chairman of its
   Investment Advisory Committee since its inception. He has been managing
   investments since joining T. Rowe Price in 1989.
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FUND PROFILE
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 Note: The following questions and answers about buying and selling shares and
 services do not apply to employer-sponsored retirement plans. If you are a
 participant in one of these plans, please call your plan's toll-free number for
 additional information.


 How can I purchase shares?

   Fill out the New Account Form and return it with your check in the postpaid
   envelope. The minimum initial purchase is $2,500 ($1,000 for IRAs and gifts
   or transfers to minors). The minimum subsequent investment is $100 ($50 for
   IRAs, gifts or transfers to minors, or Automatic Asset Builder). You can also
   open an account by bank wire, by exchanging from another T. Rowe Price fund,
   or by transferring assets from another financial institution.


 How can I sell shares?

   You may redeem or sell any portion of your account on any business day.
   Simply write to us or call. You can also access your account at any time via
   Tele*Access /(R)/ or our Web site. We offer convenient exchange among our
   entire family of domestic and international funds. Restrictions may apply in
   special circumstances, and some redemption requests need a signature
   guarantee.


 When will I receive income and capital gain distributions?

   The fund distributes income monthly and net capital gains, if any, at
   year-end. For regular accounts, income and short-term gains are taxable at
   ordinary income rates, and long-term gains are taxable at the capital gains
   rate. Distributions are reinvested automatically in additional shares unless
   you choose another option, such as receiving a check. Distributions paid to
   IRAs and employer-sponsored retirement plans are automatically reinvested.


 What services are available?

   A wide range, including but not limited to:

  . retirement plans for individuals and large and small businesses;

  . automated information and transaction services by telephone or computer;

  . electronic transfers between fund and bank accounts;

  . automatic investing and automatic exchange;

  . brokerage services; and

  . asset manager accounts.
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FUND PROFILE
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T. Rowe Price Associates, Inc.
100 East Pratt Street
Baltimore, MD 21202
www.troweprice.com

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 T. Rowe Price Investment Services, Inc., Distributor